“Anatomy, diet, behavior ... they still had enough in common for the mystery mollusk to be classified as a nudibranch. “The three genes… supported that Bathydevius is a divergent genus ...

Nudibranchs, or sea slugs, are soft-bodied marine gastropod mollusks. Monterey Bay Aquarium ... a specimen to study it closer in a lab, and its anatomy and genetics revealed the creature to ...